html,body,#app{
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}


*, *:before, *:after {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-text-size-adjust: none;
  font-style: initial;
}
@mixin px($px){
  font-size: ($px)*1px;
  [data-dpr = "2"] & {
    font-size: ($px*2)*1px;
  }
  [data-dpr = "3"] & {
    font-size: ($px*3)*1px;
  }
}
